Install the driver

Go to the plugins page of the Wordpress Manager (/wordpress/wp-admin/plugins.php)

Click Add New

Click Upload

Select the .zip archive of the driver (note: the plug-in manager will ONLY accept .zip files)

Click Activate Plugin

Create a test page, something like this:

<html><body><?php/** load factual driver. Make sure the path below matches what you have! */require_once('./wp-content/plugins/Factual/Factual.php');$factual=newFactual("YOUR_API_KEY","YOUR_API_SECRET");$query=newFactualQuery;$res=$factual->fetch("places-us",$query);$data=$res->getData();?><h1>Hello. I found a place at:
<?php>/** print the address of the first place */print_r($data[0][address]);?></h1></body></html>

Make sure you’ve put your own key and secret when you create the $factual object.

Make sure the import path matches the path to your plugin.

You’ll need to pass a zip parameter to the URL with a US postcode.

Assuming everything is configured correctly, your new webpage should look like this: